Preseason I.D. - Illiana
- PBRPlus Preseason I.D - Illiana: Top Overall Prospects 1/26/18
- IL Preseason I.D. - Illiana: Pitching Analysis 1/25/18
- IL Preseason I.D. - Illiana: Infield Analysis 1/24/18
- IL Preseason I.D - Illiana: Outfield Analysis 1/23/18
- IL Preseason I.D. - Illiana: Catching Analysis 1/22/18
- IL Preseason I.D. Illiana: Statistical Analysis 1/17/18
- IL Preseason I.D. Illiana: Quick Hits 1/16/18
- IL Preseason I.D - Illiana: Preview 1/11/18
| Name | State | School | Class | Pos | Commitment |
| Ethan Alexander | IL | Marian Catholic | 2020 | RHP | Rend Lake JC |
| Justin Alvarado | IL | Mount Carmel | 2019 | 3B | |
| Marc Babicz | IL | St. Laurence | 2020 | OF | Lake Land JC |
| Jeffrey Ballard | IN | Munster | 2019 | LHP | Trine University |
| Mathew Birtman | IL | Lake Forest | 2020 | LHP | |
| Vince Borrelli | IL | Andrew | 2020 | RHP | South Suburban JC |
| Daniel Brannigan | IL | Lemont | 2019 | 1B | Dominican University (IL) |
| Zach Brothen | IL | Lincoln-Way East | 2020 | C | |
| Cameron Bufford | IL | Marian Catholic | 2019 | SS | Grambling State |
| Blaze Cano | IN | Hanover Central | 2021 | SS | Purdue University-Northwest |
| Connor Cassady | IL | Lyons Township | 2020 | RHP | Bowdoin College |
| Michael Ciesla | IL | Lemont | 2020 | C | Quincy University |
| Lane Clevenger | IN | McCutcheon | 2020 | C | |
| Bryan Corrigan | IL | Yorkville | 2019 | 2B | |
| Elijah Covington | IN | Boone Grove | 2020 | SS | |
| Jonny Crowel | IL | Marist | 2021 | C | Flagler College |
| Angel Cuevas | IL | Round Lake | 2019 | SS | |
| Jason Daniels | IN | Morton | 2020 | OF | |
| Derrick Dawson | IN | Mishawaka | 2020 | C | Lincoln Trail JC |
| Mitchell Dollah | IL | Stagg | 2020 | C | |
| DeAndre Edwards | IL | Lane Tech | 2021 | LHP | |
| Jaden Foster | IL | Morgan Park | 2021 | SS | |
| Alex Gasbarro | IL | St. Laurence | 2020 | 2B | Purdue University-Northwest |
| Johnny Gonsalves | IL | Tinley Park | 2020 | SS | McHenry County JC |
| Demetri Hamilton | IL | Tinley Park | 2020 | 1B | |
| Cody Harrison | IL | Plainfield North | 2019 | RHP | |
| Myles Henry | IL | Crete-Monee | 2019 | SS | Triton JC |
| Brendon Herrin | IL | Andrew | 2019 | SS | Evansville |
| Cameron Hill | IL | Brother Rice | 2021 | OF | Illinois State |
| Jacob Hirschtritt | IL | Whitney Young | 2020 | RHP | |
| Joel Holtcamp | IN | Andrean | 2019 | RHP | Lee University |
| Mason Hsieh-Bailey | IL | Oak Park- River Forest | 2020 | OF | |
| Adam Huekels | IL | Marian Catholic | 2020 | OF | Niagara |
| Justin Johnson | IL | Marian Catholic | 2021 | LHP | Marian University (IN) |
| Michael Johnson | IL | St Ignatius | 2021 | SS | John Carroll University |
| Pierce Jones | IL | Marian Catholic | 2019 | OF | Northern Illinois |
| Jacob Keil | IL | Prospect | 2019 | SS | |
| Chandler Kerr | IL | Marian Catholic | 2019 | LHP | Concordia University-Chicago |
| Brandon Lucero | IN | Merrillville | 2019 | C | |
| Parker Mathieson | IL | Normal University | 2019 | OF | Parkland College |
| Zachary McKenna | IN | Chesterton | 2020 | C | Anderson University (IN) |
| Blake Neyhart | IN | Lake Central | 2021 | SS | Franklin College |
| Lawrence Noble | IL | Gwendolyn Brooks | 2019 | OF | Coppin State |
| Breck Nowik | IL | Lake Forest | 2020 | SS | Illinois-Chicago |
| Justice Page | IL | Lindblom | 2019 | 3B | Clark Atlanta University |
| George Pavlopoulos | IL | Providence Catholic | 2020 | 2B | Dubuque |
| Nathan Sanchez | IL | Lake View | 2019 | C | |
| Justin Schassburger | IN | Andrean | 2021 | RHP | Anderson University (IN) |
| Cameron Smith | IL | Marian Catholic | 2020 | 3B | Benedictine University (IL) |
| Zach Starr | IL | Bradley-Bourbonnais | 2021 | C | |
| Mike Sullivan | IL | Wheaton North | 2019 | RHP | Maryville University |
| Jack West | IL | 2021 | RHP | Kaskaskia JC | |
| Kyle Wisch | IL | Hinsdale Central | 2019 | RHP | Nebraska |
| Jeffrey Wright | IL | Homewood-Flossmoor | 2021 | OF | |
| Zack Zborowski | IN | Valparaiso | 2019 | LHP |